Brick factory dust removal device

Abstract

The utility model provides a dust removal device for a brickyard, which relates to the technical field of dust removal devices and comprises a dust suction fan, a heat exchange dust fall cylinder, a cooling dust fall cylinder I, a cooling dust fall cylinder II, an induced draft fan and a bag type dust remover, the dust suction fan is connected with a dust outlet of a brickyard kiln, and an air outlet of the dust suction fan is connected with a dust inlet of the heat exchange dust fall cylinder; the heat exchange dust-settling cylinder is connected with a dust inlet of the first cooling dust-settling cylinder, the first cooling dust-settling cylinder is connected with a dust inlet of the second cooling dust-settling cylinder, the second cooling dust-settling cylinder is connected with an air inlet of the induced draft fan, and the induced draft fan is connected with a dust inlet of the bag type dust collector. The bag type dust collector can solve the problems that when an existing bag type dust collector is directly applied to brickyard dust collection, the temperature difference between high-temperature flue gas and pulse airflow is too large, bag pasting is caused, slag dust in the flue gas of the brickyard can increase the filtering burden of a cloth bag, the dust collection burden of a pulse device is increased, and the durability of equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal devices, in particular to a dust removal device for a brick factory. Background Art

[0002] Brick factories produce high-temperature dusty flue gas during the production process, which not only pollutes the environment, but also has adverse effects on the health of workers. Therefore, brick factories use dust collectors to remove dust from the flue gas generated by raw material processing and kiln production steps. Brick factory dust collectors mainly use bag dust collectors. During dust removal, smoke is introduced into the bag dust collector through fans and pipes. The bag filter elements made of fiber woven materials are used to capture solid particles in the dusty gas. When the dust particles go around the filter cloth fibers, they collide with the fibers due to inertia and are intercepted.

[0003] At present, brick factories directly use bag dust collectors to remove dust, which has the following problems: First, the large temperature difference between high-temperature flue gas and pulse airflow will cause "bag sticking" problems, increasing maintenance costs and downtime failure rates; second, the slag dust in the smoke of brick factories has not been pre-treated, which will increase the filtering burden of the bag and the dust removal burden of the pulse device, reducing the durability of the equipment and consumables. Therefore, this application proposes a dust removal device for brick factories. Utility Model Content

[0004] In order to overcome the problems in the background technology, the utility model provides a dust removal device for a brick factory, which solves the problem that the temperature difference between the high-temperature flue gas and the pulse airflow is too large when the existing bag dust collector is directly used for brick factory dust removal, which will cause "bag sticking", and the residue dust in the flue gas of the brick factory will increase the filtering burden of the bag and the dust removal burden of the pulse device will reduce the durability of the equipment.

[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions:

[0006] A dust removal device for a brick factory comprises a dust extraction fan, a heat exchange dust reduction cylinder, a first cooling dust reduction cylinder, a second cooling dust reduction cylinder, an induced draft fan, and a bag dust collector. The air inlet of the dust extraction fan is connected to the dust outlet of a kiln in the brick factory through a pipeline, the air outlet of the dust extraction fan is connected to the dust inlet of the heat exchange dust reduction cylinder through a pipeline, the dust outlet of the heat exchange dust reduction cylinder is connected to the dust inlet of the first cooling dust reduction cylinder through a pipeline, the dust outlet of the first cooling dust reduction cylinder is connected to the dust inlet of the second cooling dust reduction cylinder through a pipeline, the dust outlet of the second cooling dust reduction cylinder is connected to the air inlet of the induced draft fan through a pipeline, and the air outlet of the induced draft fan is connected to the dust inlet of the bag dust collector through a pipeline.

[0007] Furthermore, the heat exchange dust reduction cylinder includes a dust reduction cylinder body and a heat exchange pipeline. A dust inlet is provided on the lower cylinder wall of the dust reduction cylinder body, a slag collecting hopper is provided at the bottom of the dust reduction cylinder body, and a dust outlet is provided at the top of the dust reduction cylinder body. The heat exchange pipeline is installed in a serpentine coil in the vertical space of the dust reduction cylinder body, and cold water is introduced into the pipe cavity for heat exchange with the dust-containing hot air.

[0008] Furthermore, the top end of the heat exchange pipeline is a water inlet connected to the pump of the cold water area of ​​the water supply tank, and the bottom end of the heat exchange pipeline is a water outlet connected to the insulation area of ​​the water supply tank.

[0009] Furthermore, the cooling dust reduction cylinder 1 and the cooling dust reduction cylinder 2 have the same structure, including a dust reduction pipe and a guide pipe. The dust reduction pipe is coaxially arranged in the guide pipe. The top of the dust reduction pipe is a dust inlet, and the bottom of the dust reduction pipe is a dust outlet connected to the lower part of the guide cylinder. A slag collecting hopper 2 is arranged at the bottom of the guide cylinder, and a dust removal port is arranged at the upper part of the guide cylinder and the top is closed.

[0010] Furthermore, exhaust holes are evenly arranged on the tube wall at the bottom of the dust suppression tube.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The present application is provided with a heat exchange dust reduction cylinder, a cooling dust reduction cylinder 1 and a cooling dust reduction cylinder 2, which can cool down the high-temperature flue gas and solve the problem of "bag sticking" caused by excessive temperature difference between the high-temperature flue gas and the pulse airflow. The cooling dust reduction cylinder 1 and the cooling dust reduction cylinder 2 increase the flue gas range within a limited volume, which can enhance the cooling effect and dust reduction effect of the flue gas, pre-treat the flue gas entering the bag dust collector to remove larger slag dust, reduce the processing burden of the bag, and solve the problem that the slag dust in the smoke from the brick factory is not pre-treated, which will increase the filtration burden of the bag and the dust removal burden of the pulse device, thereby reducing the durability of the equipment and consumables. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required for use in describing the embodiments are described.

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the heat exchange dust suppression cylinder structure of the utility model;

[0017] Figure 4 It is a schematic structural diagram of a cooling dust suppression cylinder of the utility model.

[0018] 1-dust exhaust fan, 2-heat exchange dust reduction cylinder, 21-dust reduction cylinder, 22-heat exchange pipeline, 23-slag collecting hopper one, 3-cooling dust reduction cylinder one, 31-dust reduction pipe, 32-guide pipe, 33-slag collecting hopper two, 34-exhaust hole, 4-cooling dust reduction cylinder two, 5-induced draft fan, 6-bag dust collector, 7-water supply tank. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings to facilitate understanding by technicians.

[0020] The utility model discloses a dust removal device for a brick factory, see Figure 1-4 A dust removal device for a brick factory comprises a dust extraction fan 1, a heat exchange dust reduction cylinder 2, a cooling dust reduction cylinder 3, a cooling dust reduction cylinder 4, an induced draft fan 5, and a bag dust collector 6. The air inlet of the dust extraction fan 1 is connected to the dust outlet of a kiln in the brick factory through a pipeline, the air outlet of the dust extraction fan 1 is connected to the dust inlet of the heat exchange dust reduction cylinder 2 through a pipeline, the dust outlet of the heat exchange dust reduction cylinder 2 is connected to the dust inlet of the cooling dust reduction cylinder 3 through a pipeline, the dust outlet of the cooling dust reduction cylinder 3 is connected to the dust inlet of the cooling dust reduction cylinder 4 through a pipeline, the dust outlet of the cooling dust reduction cylinder 4 is connected to the air inlet of the induced draft fan 5 through a pipeline, and the air outlet of the induced draft fan 5 is connected to the dust inlet of the bag dust collector 1 through a pipeline.

[0021] The dust extraction fan 1 can draw the smoke and dust from the brick factory into the heat exchange dust reduction cylinder 2. The smoke and dust move upward from the lower part of the heat exchange dust reduction cylinder 2, and a part of the heavier slag dust will remain at the bottom of the heat exchange dust reduction cylinder 2. After the smoke and dust are cooled during the upward movement, they are passed from the top pipe into the cooling dust reduction cylinder 1 3 and the cooling dust reduction cylinder 2 4 for cooling and dust reduction, thereby reducing the temperature difference between the smoke and dust drawn into the bag dust collector 6 by the induced draft fan 5 and the jet device of the pulse device, thereby avoiding the problem of "bag sticking" caused by excessive temperature difference, and at the same time reducing the slag dust content, thereby solving the problem that the slag dust in the smoke from the brick factory has not been pre-treated, which will increase the filtering burden of the bag and the dust removal burden of the pulse device.

[0022] See also Figure 1-4 The heat exchange dust reduction cylinder 2 includes a dust reduction cylinder body 21 and a heat exchange pipeline 22. A dust inlet is arranged on the lower cylinder wall of the dust reduction cylinder body 21, a slag collecting hopper 23 is arranged at the bottom of the dust reduction cylinder body 21, and a dust outlet is arranged at the top of the dust reduction cylinder body 21. The heat exchange pipeline 22 is installed in a serpentine coil in the vertical space of the dust reduction cylinder body 21. Cold water is introduced into the pipe cavity to exchange heat with the dust-containing hot air. After the high-temperature smoke enters the dust reduction cylinder body 21, the smoke passes upward through the gap of the heat exchange pipeline 22 to exchange heat with the cold water in the pipe for cooling, and a part of the slag dust enters the slag collecting hopper 23 to be collected and removed.

[0023] See also Figure 1-4The top of the heat exchange pipeline 22 is a water inlet connected to the pump in the cold water area of ​​the water supply tank 7, and the bottom of the heat exchange pipeline 22 is a water outlet connected to the insulation area of ​​the water supply tank 7, which can collect the heat of the smoke and store it in the water for other production processes.

[0024] See also Figure 1-4 The cooling dust reduction cylinder 1 3 and the cooling dust reduction cylinder 2 4 have the same structure, including a dust reduction pipe 31 and a guide pipe 32. The dust reduction pipe 31 is coaxially arranged in the guide pipe 32. The top of the dust reduction pipe 31 is a dust inlet, and the bottom of the dust reduction pipe 32 is a dust outlet connected to the lower part of the guide cylinder 32. A slag collecting hopper 2 33 is arranged at the bottom of the guide cylinder 32, and a dust removal port is arranged on the upper part of the guide cylinder 32 and the top is closed. The loop tube cavity structure formed by the dust reduction pipe 31 and the guide cylinder 32 can increase the movement stroke of the flue gas. The flue gas enters the dust reduction pipe 31 from the top and moves downward to reduce dust. After reaching the bottom, it moves upward from the gap through the cavity between the dust reduction pipe 31 and the guide cylinder 32, which is beneficial to the cooling of the flue gas and more sufficient dust reduction, thereby reducing the burden of the final bag dust removal device.

[0025] See also Figure 1-4 The dust suppression pipe 31 has exhaust holes 34 evenly arranged on the wall at the bottom thereof, which is conducive to the slag dust falling into the slag collecting hopper 33 while the smoke moves upward from the exhaust holes 34 under the positive pressure of the fan and is discharged.

[0026] Working process:

[0027] The dust extraction fan 1 draws the smoke from the brick factory into the heat exchange dust reduction cylinder 2. After the high-temperature smoke enters the dust reduction cylinder 21, the cold water moves from top to bottom in the heat exchange pipeline 22, and the smoke passes through the gap of the heat exchange pipeline 22 from bottom to top to exchange heat and cool down with the cold water in the pipe. A part of the slag dust enters the slag collecting hopper 23 to be collected and removed, and the smoke continues to move upward through the pipeline into the cooling dust reduction cylinder 1 3 and the cooling dust reduction cylinder 2 4. The smoke repeatedly enters the dust reduction pipe 31 from the top and moves downward to reduce dust. After reaching the bottom, it moves upward from the gap through the cavity between the dust reduction pipe 31 and the guide pipe 32, and finally enters the bag dust collector for dust removal.

[0028] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A dust removal device for a brick factory, characterized in that: The invention comprises a dust extraction fan (1), a heat exchange dust reduction cylinder (2), a cooling dust reduction cylinder (1) (3), a cooling dust reduction cylinder (2) (4), an induced draft fan (5), and a bag dust collector (6). The air inlet of the dust extraction fan (1) is connected to the dust outlet of a brick kiln through a pipeline, the air outlet of the dust extraction fan (1) is connected to the dust inlet of the heat exchange dust reduction cylinder (2) through a pipeline, the dust outlet of the heat exchange dust reduction cylinder (2) is connected to the dust inlet of the cooling dust reduction cylinder (1) through a pipeline, the dust outlet of the cooling dust reduction cylinder (1) is connected to the dust inlet of the cooling dust reduction cylinder (1) through a pipeline, the dust outlet of the cooling dust reduction cylinder (1) is connected to the dust inlet of the cooling dust reduction cylinder (2) through a pipeline, the dust outlet of the cooling dust reduction cylinder (3) is connected to the dust inlet of the cooling dust reduction cylinder (2) through a pipeline, the dust outlet of the cooling dust reduction cylinder (2) is connected to the air inlet of the induced draft fan (5) through a pipeline, and the air outlet of the induced draft fan (5) is connected to the dust inlet of the bag dust collector (6) through a pipeline.

2. The brick factory dust removal device according to claim 1, characterized in that: The heat exchange dust reduction cylinder (2) comprises a dust reduction cylinder body (21) and a heat exchange pipeline (22); a dust inlet is arranged on the lower cylinder wall of the dust reduction cylinder body (21); a slag collecting hopper (23) is arranged at the bottom of the dust reduction cylinder body (21); a dust outlet is arranged at the top of the dust reduction cylinder body (21); the heat exchange pipeline (22) is installed in the vertical space of the dust reduction cylinder body (21) in the form of a serpentine coil, and cold water is introduced into the tube cavity to exchange heat with the dust-containing hot air.

3. The brick factory dust removal device according to claim 2 is characterized in that: The top end of the heat exchange pipeline (22) is a water inlet connected to a pump in a cold water zone of the water supply tank (7), and the bottom end of the heat exchange pipeline (22) is a water outlet connected to a heat preservation zone of the water supply tank (7).

4. The brick factory dust removal device according to claim 1, characterized in that: The cooling dust reduction cylinder 1 (3) and the cooling dust reduction cylinder 2 (4) have the same structure, and include a dust reduction pipe (31) and a guide pipe (32). The dust reduction pipe (31) is coaxially arranged in the guide pipe (32). The top of the dust reduction pipe (31) is a dust inlet, and the bottom of the dust reduction pipe (31) is a dust outlet connected to the lower part of the guide pipe (32). A slag collecting hopper 2 (33) is arranged at the bottom of the guide pipe (32), and a dust removal port is arranged at the top of the guide pipe (32) and the top is closed.

5. The brick factory dust removal device according to claim 4 is characterized in that: Exhaust holes (34) are evenly arranged on the tube wall at the bottom of the dust suppression tube (31).

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